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import/texlive: Add helper to check installed files. 

* guix/import/texlive.scm (files-differ?): New procedure.
Ricardo Wurmus 2022-01-20 22:55:55 +01:00
parent 374464a3bb
commit 5ecb4acdcb
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1 changed files with 41 additions and 1 deletions
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42
guix/import/texlive.scm
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@ -18,6 +18,7 @@
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (guix import texlive)
#:use-module (ice-9 ftw)
#:use-module (ice-9 match)
#:use-module (ice-9 rdelim)
#:use-module (srfi srfi-1)
@ -38,7 +39,8 @@
#:use-module (guix upstream)
#:use-module (guix packages)
#:use-module (guix build-system texlive)
#:export (texlive->guix-package
#:export (files-differ?
texlive->guix-package
texlive-recursive-import))
;;; Commentary:
@ -196,6 +198,44 @@
(loop all (record key value current field-type) key))))
(loop all current #false))))))))))))
(define* (files-differ? directory package-name
#:key
(package-database tlpdb)
(type #false)
(direction 'missing))
"Return a list of files in DIRECTORY that differ from the expected installed
files for PACKAGE-NAME according to the PACKAGE-DATABASE. By default all
files considered, but this can be restricted by setting TYPE to 'runfiles,
'docfiles, or 'srcfiles. The names of files that are missing from DIRECTORY
are returned; by setting DIRECTION to anything other than 'missing, the names
of those files are returned that are unexpectedly installed."
(define (strip-directory-prefix file-name)
(string-drop file-name (1+ (string-length directory))))
(let* ((data (or (assoc-ref (package-database) package-name)
(error (format #false
"~a is not a valid package name in the TeX Live package database."
package-name))))
(files (if type
(or (assoc-ref data type) (list))
(append (or (assoc-ref data 'runfiles) (list))
(or (assoc-ref data 'docfiles) (list))
(or (assoc-ref data 'srcfiles) (list)))))
(existing (file-system-fold
(const #true) ;enter?
(lambda (path stat result) (cons path result)) ;leaf
(lambda (path stat result) result) ;down
(lambda (path stat result) result) ;up
(lambda (path stat result) result) ;skip
(lambda (path stat errno result) result) ;error
(list)
directory)))
(if (eq? direction 'missing)
(lset-difference string=?
files (map strip-directory-prefix existing))
;; List files that are installed but should not be.
(lset-difference string=?
(map strip-directory-prefix existing) files))))
(define (files->directories files)
(define name->parts (cut string-split <> #\/))
(map (cut string-join <> "/" 'suffix)